Scientists from Brazil conducted an experiment to evaluate the replacing levels of soybean meal with castor seed meal in diets for lambs on the productive and metabolic parameters. The lambs were fed with varying concentrations 
of castor seed meal replacing soybean meal. The experimental setup was completely randomized with five treatments and ten replicates.
The experimental results showed that despite the decreased intake, nutrient digestibility and nitrogen balance, castor seed meal could replace 50% of soybean meal without changing the lamb’s blood parameters or performance.